Problem10743--ABC137 - A - +-x

10743: ABC137 - A - +-x

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Time Limit : 1.000 sec  Memory Limit : 512 MiB

Description

We have two integers: $A$ and $B$.

Print the largest number among $A + B$, $A - B$, and $A \times B$.

Input

Input is given from Standard Input in the following format:

```
$A$ $B$
```

Output

Print the largest number among $A + B$, $A - B$, and $A \times B$.

Constraints

-   All values in input are integers.
-   $-100 \leq A,\ B \leq 100$

Sample 1 Input

-13 3

Sample 1 Output

-10

The largest number among $A + B = -10$, $A - B = -16$, and $A \times B = -39$ is $-10$.

Sample 2 Input

1 -33

Sample 2 Output

34

The largest number among $A + B = -32$, $A - B = 34$, and $A \times B = -33$ is $34$.

Sample 3 Input

13 3

Sample 3 Output

39

The largest number among $A + B = 16$, $A - B = 10$, and $A \times B = 39$ is $39$.

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